Comparison of Total Body Irradiation (TBI) Conditioning with Non-TBI for Autologous Stem Cell Transplantation in Newly Diagnosed or Relapsed Mature T- and NK-Cell Non-Hodgkin Lymphoma
Published in
Cancer Research and Treatment : Official Journal of Korean Cancer Association, May 2016
Chi Hoon Maeng, Young Hyeh Ko, Do Hoon Lim, Eun Suk Kang, Joon Young Choi, Won Seog Kim, Seok Jin Kim
Abstract
This retrospective study was conducted for comparison of survival outcomes and toxicities of autologous stem cell transplantation (ASCT) based on the use of total body irradiation (TBI) as a part of the conditioning regimen in patients with mature T- and NK-cell lymphomas.
Patients who underwent ASCT in the upfront or salvage setting between January 2000 and December 2013 were analyzed. Patients were dichotomized according to the TBI group (n=38) and non-TBI group (n=60) based on the type of conditioning regimen for ASCT.
Patients with responsive disease underwent upfront ASCT (TBI: n=16, non-TBI: n=29) whereas patients with refractory disease (TBI: n=9, non-TBI: n=12) or relapsed disease (TBI: n=13, non-TBI: n=19, Figure 1) underwent ASCT after salvage treatment. Hematologic and non-hematologic toxicities were manageable, and the median cumulative toxicity score according to Seattle criteria was estimated as 2 (range, 0-7) in both groups. No significant difference in100-day mortality was observed between the TBI (13%, 5/38) and non-TBI (12%, 12/60) groups, and most deaths were related to disease progression. There was no difference in overall and progression-free survival, however the TBI group showed a trend of better survival in upfront and salvage ASCT than the non-TBI group. However, patients with refractory disease showed the worst outcome regardless of the use of TBI. Patients who showed complete response before ASCT showed better progression-free survival than those who showed partial response.
TBI could be used as an effective part of conditioning for ASCT in patients with mature T- and NK-cell lymphomas.
